. . "12]FIG. 2B is an isometric cut-away side view of a thick mask embodiment of the invention. [0013]FIG. 3A is a side view of the embodiment shown in FIG. 2A, with increased component details. [0014]FIG. 3B is a side view of the embodiment shown in FIG. 2B, with increased component details. [0015]FIG. 4A is a schematic view of optical segments showing LED light distribution falling within the associa" . .